Gas-analyzing device



May 19, 1925. 1,538,592

0. RODHE GAS ANALYZING DEVIGI Filed May 20, 1924 2 Shah-Shut 1 May 19, 192s. 1,533,592

O. RODHE GAS ANALYZING-mm Filed May 20, 1924 2 Shah-Shut 2 Patented May19, .1925.

m Ep STAT ES oLor aonrm, or srocxnomr, swnnrm.

- GAS-ANALYZING DEVICE.

Application filed May 20, 1924. Serial No. 714,710.

- T0,all whom it may concern:

Be it known that I, OLOF Ronrm, a sub ject of the King of Sweden, and aresident of 54 Oden atan, in the city of Stockholm,-

Sweden ave invented a certain new and useful (iras-Analyzin -Device, ofwhich the following is a speci cation.

This invention relates to means for effecting gas analyses and it refersin particular to such gases as will require the addition of a certain inedient, before they are sub mitted to the dlfi'erent steps of treatmentby chemical analysis, and among other uses the invention considers theanalysis of gases, poor, in oxygen or requiring the addition ofoxygenimor before carrying out the testing operations The meanssuggested in the previous art for the testing of gases poor'in oxygenare generally so arranged and constructed that air or oxygen may beforced or sucked through the respective devices simultaneously with thegases 'to be analyzed. Such devices generally intend to effect athorough and complete mixing. of the gas to be tested with the gas to beadded by any suitable" means, inasmuch} as otherwise a chemicalcombination cannot be safely and reliably effected by a catalyzercontained in the combustion chamber,'which would seri ously interferewith the exactness of the re- 'sults of the analysis. My invention isintended to device' means to overcome these and other difiiculties, andwith this end in view the oxygen which may for instance be required fora combustion, 1n the practice of 'my invention is 'not directly added tothe gas to be tested, but provision is made that the'oxygen required forthe combustion is introduced into a storage' receptacle or-the like,which I shall call an accumulator for the sake of brevity, between twosucceeding analyses, that is to say before and after each analysis, thesaid accumulator receiving the oxygen and having means of yielding andintroducing the oxygen necessa for the combustion to the gas to be testeupon the subsequent passing of such gas through the combustion chamber.Provision is also made for the re-charging of the accumulator withoxygen by the admission of a fresh W quantity of air or of oxygen,before proceeding to" make the next analysis.

Among other important advantages of my improvement I may mention forinstance the following I 1/. It maybe safely assumed that there- 2/thegas to be tested may .be used in as large a quantity as possibleinasmuch as there is no further mixing of the gas to be added with thegas to be tested, thus also 3/warranting a more exact and reliablemeasurement. i

The device Will be more fully described with reference to theaccompanying drawings, showing by way of example various forms ofembodiment of the principles of my invention in Figures 1, 2 and 3 in asubstantially diagrammatic representation.

Upon the conduit l-which communicates with a suitable level apparatus orthe like a measuring member'Q with equalizing vessel or chamber 3 andthe closing or looking member 4 are arranged in the usual manner. Tothese different members the novel member 5 is added'according to myinvention fining member or look 6: .Upon the flowin back oftheconfining'liquidfrom the leve vessel into the members 2, 4: and 5.theair sucked in through the conduits 6 and. 7 is forced through thecombustion chamber 8 either previously-thereto or simultaneously withthe volume contained in this space 3, the air sucked into the space 5being thereby removed, so that the accumulator provided at or near thecombustion'chamber 8 fmay received the oxygen from the air. Theaccumulator is a substance capable of bein saturated with oxygen whichcan give 0 this oxygen during combustion, such as for example, copperoxide. Before starting'the analysis proper, that is to say, before thebi'flIlQhEdgQfT section 9 is cut off by the rising *confining liquid,the air has-been perfectly removed from the'space 5, so that theanalysis of the gasgto be tested'may now be effected in the receptacle2; this quantity of gas under test will find the necessary oxygen forcombustion in the accumulator at 8 which it takes'up in accordance withthe requirements. This procedure is repeated before and after everyanalysis.

In the modified form of arrangement according to Figure 2* looking orconfining arrangement 10 is provided possessing two ascending legs 11and 12 from which two branch pipes 13 and 14 are shunted off.

,- The branch 14 is connected to an aspirator.

When the confining liquid enters the level apparatus the descending ofthe level in the confining member 10, besides producing the usualwell-known; phenomena, causes in the first place the exposing of thejoining points 15 of the branches. At. the same moment the aspirator isin position to suck air through the branch 13, the conduit 16, 17, 18and the connecting branch 14. From this supply of air the accumulatorreplaces the quantity of oxygen consumed in the preceding analysis. Theheight of the branching ofl' joints 15 is so arranged that the lockingtakes place before the locking in the confining member 19, so that inthe beginning of the analysis no more air is sucked through theapparatus. Only after the analysis has been finished and the confiningor looking liquid has been returned into the level vessel, is air againsucked through the combustion chamber in the manner hereinbeforedescribed, until a fresh analysis is to be made.

In the arrangement of the modification of Figure 3 the measuring vesselis indicated at 21, and 22 indicates the mercury confining members ofthe switch, 24 is a clamp in the conduit, 25 is the measuring bell, and26 the absorption vessel.

In the position of the mercury confining members 22 of the switchindicated in full lines in the drawing air is free to pass in anydesired direction through the electric furnace 23. From this air the oxgen carrier may be again perfectly fille up and saturated with oxygen.During this time an analysis, for instance a test of the pro-' ducer-gasfor its contents of carbonic acid is effected. After the termination ofthis analysis the switch causes the mercury confining members or looks22 to be shifted into the position shown in dotted lines. In this latterposition no air can 'pass through the electric furnace. The new volumeof gas to be tested now passes by way of the first lock 22 and along thepath indicated by the arrow 28 through the second lock 22, and thenceonward in the direction indicated by the arrow 29 and into the measuringbell 25, or, in case the clamp24 should be closed, in the directionindicated by the arrow 30 into the absorption vessel, and thence intothe measuring bell.

The gas passes in the direction of the arrow 29 through the openclamp-24 in case a test for hydrogen-contents is to be made, while, whenthe gas with the clamp 24 closed passes in the direction of the arrow30, an analysis for the sum of the contents of carbonic acid and of thetotality of the combustible gas constituents can be made. During theseanalyses a portion of the oxygen of the copper-oxid cartridge in thecombustion furnace 23 is of course consumed. After the mercury locks 22have been again The invention, it should be understood, is

capable of other modifications and changes in accordance with varyinconditions of its employment for practica purposes, and

without deviating fromthe spirit of the invention, as particularly setforth in the claims hereunto appended.

I claim 1. The method of testing gases and gas mixtures, which consistsin submitting the gases and gas mixtures to combustion with an admixtureof oxygen, and b the a d of oxygen-transmlttmg means, an passing anoxygen containing gas current oversaidtransmitt-ing means between twosucceeding analyses, in order to keep the oxygen carrier supplied withfresh oxygen and at full activlty.

2. In-a device'of the kind described, a measuring vessel, a levelingvessel, liquid confining means communicating therewith, and gasintroducing means communicatin with the measuring vessel, an oxygenanair storage vessel and a by-pass on which said storage vessel isarranged, and suction creating means, connected to said storage vessel.

3. In a device of the kind described, a measuring vessel, a levelingvessel, liquid confining means communicating therewith, gas introducingmeans communicating with the measuringvessel, combustion means for gascommunicating with the measuring vessel, a by-pass conduit. shunted onthe combustion means and the measuring vessel, and a storage vessel onsaid by-pass adapted for the reception of oxygen and air, and means forcreating a suction on said by-pass.

4. In a device of the kind described in combination, gas measuringmeans, a combustion chamber, gas-and-liquid confining means, andgas-accumulating means adapted for the storage of oxygen and air,shunted on said confining means, and adapted to be filled withoxygen-containing gas durin the flowing back of the confining liquid?which last mentioned gas is introduced into the combustion chamber uponthe movement of the confining liquid in the opposite direction andsaturates the oxygen-carrier in said chamber with oxygen.

5. In a device of the kind described, a measuring vessel, a levelingvessel, a combustion chamber operatively connected therewith, a by-passconduit shunted on the combustion chamber and the measuring vessel, anenlargement on said by-pass, a liquidconfining vessel on said b -passintermediate the enlargement and the combustion chamber, and open to theoutside 'air.

6. In a device of. the kind described, a measuring vessel, 8. levelvessel, acombustion chamber connected thereto, a by-pass conduit shuntedon the combustion chamber and the measuring vessel, two ascending'branch pipes on said by-pa'ss, said branches being connected to thecombustion chamber at diflerent ends thereof, and air introducing means,adapted for connection with said branch pipes.

7. In a device of'the kind described, a

measuring vessel, :1 level vessel, a combus-" tion chamber connectedtherewith, a confining and locking member intermediate the level vesseland the measuring vessel, a bypass shunted on the combustion chamber andthe measuring vessel, extensions on said by-pass adapted for theadmission and storage of oxygen containing gas, and connected to thecombustion chamber, and arranged at such height with relation to theintermediate confining member, as to be adapted to produce the confiningof gas in said extensions before efiecting the confining in theconfining and locking member.=

In a device. of; the kind described, a

the switching means and the combustion chamber, and regulating andcontrolling means shunted between the absorption means and said by-pass.

In testimony whereof I have signed this specification in the presence ofone witness.

OLOF RODHE.- Witness:

Hnnnnnr BENSON.

ed to said conduits, aby-pass shunted on

